lispenard



(No Model.) 2 Sheets-Sheet 1. G. LISPENARD.

MACHINE FOR COVERING WIRE. No. 445,120. Patented Jan. 20,1891.

(No Model.) 2 Sheets-Sheet 2. G. LISPENARD.

MACHINE FOR COVERING WIRE.

No. 445,120. Patented Jan. 20.1891.

$4 M Gttozmqo Ninn STATES PATENT OFFICE.

GEORGE LISPENARD, OF BROOKLYN, NEIV YORK, ASSIGNOR TO THE NOR- IVICI'I INSULATED WIRE COMPANY, OF SAME PLACE.

MACHINE FOR COVERING WIRE.

SPECIFICATION forming part of Letters Patent No. 445,120, dated January 20, 1891.

Application filed October 31,1889. Serial No. 328,801. (No model.)

To aZZ whom it may concern.-

Be it known that I, GEORGE IJSPENARD, of .llrooklyn, county of Kings, State of New York, have invented certain new and useful Improvements in Machines for Covering Wire, of which the following is a specification.

The primary purpose of my invention is to wind or cover electrical conductors with strands, ribbons, or tapes of material either for insulation or protection, but more especially for insulation.

The specific purpose of the invention is to wind spirally upon electrical conductors ribbons of paper, which maybe applied in superposed layers for purposes of insulation. The invention is, however, applicable to all classes of machines in which a strand or tape of one material is to be wound upon another.

In my improved machine the core or conductor is passed centrally through the coil, spool, or bobbin of material to be applied thereto, and the ribbon of material is fed from such a bobbin either from its exterior or from its center, and the ribbon is wound around the core in a proper spiral form. The spool orbobbin being rotated,the ribbon is applied to the core without unnecessary strain. Heretofore such a ribbon has been fed from its bobbin by strain on the ribbon itself to re volve the bobbin; but when paper is used this strain is apt to break it. In my improved apparatus this danger is reduced to a minimum. In my machine provision for applying a number of strips to a wire according to this plan may be made at different points in the length of the wire and anynuinberof ribbons wound thereon. In order that the operation may be continued for great lengths of wire without interruption or breakage of the wire, I provide reserved spools or bobbins of ribbons of the desired number to properlycover the length of wire which has been started through the machine. W hen one of these ribbons is exhausted, another bobbin is dropped into its'place and the operation continued. Automatic stop mechanism is provided, by which the machine is instantly arrested in the event of breakage or running out of the ribbon.

In the accompanying drawings, Figure l is a side elevation, partly in section, of a machine embodying my invention; Fig. 2, a sectional plan view on an enlarged scale on the line 2 2 of Fig. 1; Fig. 3, a side elevation, partly in section, of part of the machine, showing one bobbin holder and the mechanism immediately connected therewith; Fig. t, a detail plan of the die-wheels and arms on which they are mounted. Figs. 5 and 7 show in detail the bobbin spools or cores on which the paper ribbon is wound, and Fig. 0 is a sectional plan view on the line 6 (i of Fig. 1.

As shown in the drawings, I prefer to arrange the machine so that the wire to be covered will run vertically. The wire :0, led from a suitable reel, enters at the bottom of the machine over a pulley X. It then passes vertically through a series of winding filers or bobbin-holders A and suitable dies or diewheels B to the stretching-dru ms C C at the top of the machine, and thence to the storagewheel.

The machine may be driven by a belt running over a pulley Y on a driving-shaft Y. A double cone-clutch Y is connected to the shaft Y by a spline 11* and rotates therewith but is free to slide thereon. The clutch Y may be made to engage with the pulley Y or with the friction-block D in a manner hereinai'ter described. A pinion Y on the shaft Y engages with a pinion Y on a vertical shaft Y and drives it. Gear-wheels Y on the shaft Y engage gears A, that carry or drive the revolving bobbin-holders A. Each bobbin-holder has a vertical tube a, that constitutes a guide for the wire :r, and just above each oi? these tubes are located die-wheels ll, between the peripheries of which the covered wires pass, as presently described. Similar die-wheels are also mounted on the bobbinframe just above the pulley X. A bobbin of paper being laid flat upon each revolving holder A, the end of the paper ribbon is passed over a hinged guide-arm D, that controls the automatic stop device presently described, andis thence carried to the wire. In operation the normal strain of the paper lifts the guide D and holds the stop mechanism out of action.

The stretching-drmns C C are driven from the main drivingshaft Y by suitable eonneeting mechanism, shown as consisting of a pinion c on a short shaft 0', having worm c on its opposite end meshing with teeth 0* on the drum 0. Power being applied, the drums are rotated, the wire is drawn through the machine, and the revolving holders upon which the bobbins lie are rotated around the wire. The revolving holders are geared so as to revolve at a relatively greater speed than the vertical shaft Y that drives them. As the wire passes vertically through the machine, the ribbons of paper are successively wound thereon. and the covered wire upon which the desired number of ribbons has been wound passes over the stretching-drums. These drums are provided with grooved peripheries, as described in the patent to Me Cracken, No. 351,192. Just above the points where the ribbons are wound upon the wire the die-wheels B are located. Similar Wheels are also located just over the pulley X. The die-wheels are carried by half-rings b, hinged together, that embrace the lower ends a of the bobbin-carrier spindles a, so that they revolve bodily around the covered wire. The peripheries of these wheels are provided with grooves or recesses 19, and the wheels being arranged in the same plane with their peripheries in contact, as shown, opposite grooves form dieopenings through which the covered wire is drawn. The half-rings b, that carry the diewheels B of each pair, are hinged together at b and their free ends 19 are secured together by tongue-and-groove connections and pins 11 as shown in Figs. 1 and 3. The wheels may be firmly secured to the arms by their pivotscrews 0 \Vhen one pair of notches has become worn, the wheels may be moved forward one notch and a fresh die or recess provided for the wire. hen the entire peripheryhas thus become worn, the wheels may be turned down and again grooved. These dies serve to smooth and compact the paper on the wire, the die-wheels just over the pulleys X serving, principally, as guides for the wire.

In the event of a ribbon on any one of the bobbin-holders breaking, the guide D on the holder falls, and its downwardly-projecting arm d comes in contact with the inclined face d of the pivoted lever or tripping-arm d which is then rocked at its pivot and engages the adjacent end of the catch-pawl D and forces this end of the pawl upward, disengaging its opposite end from a groove 61 in the spring-actuated arm D which. is then thrown forward by the spring (Z and by a toggle connection 1) rocks the vertical shaft D to throw the clutch Y out of engagement with the driving-pulley Y, that runs loose upon the shaft, and into engagement with the opposite clutch-block D, that is mounted upon the main frame. Thus the breaking of any ribbon immediately arrests the motion of the machine by throwing the clutch Y out of contact with the driving-pulley and into contact with the stationary brake-socket, so as to instantly. stop the machine.

Each bobbin-carrying frame is provided with mechanism such as shown in Figs. 2 and 3, and above described, connected to the vertical shaft D The catch-pawls D are all connected by a rod D, and the spring-actuated arms D are all simultaneously operated when the ribbon on any one of the bobbinholders breaks.

The extra bobbins V of paper, through which the covered wire also passes, are carried upon arms V, hinged to the frame, and they are held above the respective tables to which they belong. WVhen a bobbin is exhausted, the core, ring, or spool 2*, upon which it has been wound, is removed. For this purpose I form the cores in halves, which interlock at r, so that when all the paper has been withdrawn they may be slipped past each other and removed from the wire. (See Figs. 5 and 7.) The half-rings carrying the die-wheels B are then pressedback and removed,theguide-fingersDwithdrawnorraised to a vertical position, and the arms V, upon which the bobbins of paper lie, are opened, and one bobbin is permitted to fall upon the table below into position on the tube a. The parts are then restored to their normal position. The paper from the bobbin is led to the wire over the guide-finger and the machine is again started. The upper end of the tube a is brought as near the die-wheels as possible and yet leave room for the spiral application of the ribbon to the wire. By such an arrangement the wire is supported close up to the point where the strain of the ribbon is applied and vibration or swaying of the wire is prevented.

The machine is started by means of a pivoted lever L, connected with a link Z, running to the joint of the lower toggle that actuates the stop mechanism. By swinging this lever the vertical shaft D is rocked to throw the friction-clutch into contact with the drivingpulley and place the clutch-pawls in proper position to be tripped, as already described.

By my improved apparatus I am enabled to run at high speed and to rapidly cover a great length of wire. It will be observed that there is always an absolute balance in my improved machine, irrespective of whether the paper-bobbins be full or comparatively run out. The weight of the bobbins from which the paper is being taken, as well as that of the rotating tables, is always exactly balanced about the center, through which the wire passes. \Vhen the machine is stopped, there is therefore but a slight momentum, which is readily overcome by the brake devices, and this is due not only to the balance of the machine, but to the fact that the revolving parts are all relatively smalland light.

The revolving bobbin-holders are run at such speed as to apply the paper firmly to the wire. The bobbins revolving around the core and applying the ribbons spirally. thereto, and the bobbins being loosely mounted in their holders, may slip, if necessary, and have a slight movement around their axis should there be any irregular strain on the ribbon or to compensate for the diminished size of the bobbin after it has given out a portion of the coil.

The machine thus described is practical and efficient and embodies the best way now known to me of carrying out my invention; but the general organization of instrumentalities and the details of construction may be varied Without departing from the novel features comprehended in my in'iprovements.

I claim as my invention 1. Thecombination,substantially as hereinbefore set forth, of a main frame, a revolving bobbin-holder having a vertical axis and constructed to support a bobbin or coil of covering material concentrically therewith, devices for feeding a Wire or core centrally through the bobbin-holder and through the bobbin, a holder for reserve bobbins above thebobbin-holdcr, and means for rotating the bobbin-holderand actuating the wire-feeding devices.

The combination, with a winding-flier, of a holder for a reserve bobbin or spool, which holds the bobbin or spool in such position that the wire passes through it after being covered.

The combination, substantially as hereinbefore set forth, of wire-feeding devices, a revolving holder adapted to carry a coil or bobbin of covering material concentrically with its axis, through which holder and bobbin the wire centrally passes, and a holder for the reception of reserved bobbins arranged to hold them concentrically with said bobbinholder.

4. The combination, substantially as here inbefore set forth, of wire-feeding devices,

mechanism for applying a ribbon or ribbons spirally around the wire, and the die-wheels having parallel axes about which they are adjustable.

5. The combination, substantially as here inbefore set forth, of wire-feeding devices, mechanism for applying a ribbon spirally around the wire, and dies composed of wheels having grooved peripheries.

(J. The combination, substantially as hereinbefore set forth, of wire-feeding mechanism, a driving-shaft, a driving-pulley thereon, a friction-clutch adapted to engage with the driving-pulley, a stationary clutcl1-block,with which the clutch may also engage, mechanism for applying a ribbon or ribbons spirally around the wire, and connections between the mechanism for applying the ribbon to the wire and the clutch mechanism, whereby the clutch is shifted when a ribbon breaks.

7. The combination, substantially as hereinbefore set forth, of the main frame, a revolvingbobbin-holder, a main di'ivingsliaft, gearing between the driving-shaft and the bobbin-holder, a (:lriving-pulley, a clutch connecting it with the driving-shaft, a springactuated rod, connections between this rod and the clutch, a pawl normally holding the spring-rod to insure the engagement of the clutch with the driving-pulley, a tripping-arm for disengaging this pawl from the spring actuated rod, and means for operating the tripping-arm.

In testimony whereof I have hereunto subscribed my name.

GEORGE LISPENARD.

\Vitnesses:

WALDonF II. PHILLIPS, EDWARD O. DAVIDSON. 

